/*
 * Copyright 2009 The Apache Software Foundation
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.mybatis.generator.codegen.mybatis3.xmlmapper.elements;

import org.apache.commons.lang3.StringUtils;
import org.mybatis.generator.api.IntrospectedColumn;
import org.mybatis.generator.api.dom.xml.Attribute;
import org.mybatis.generator.api.dom.xml.TextElement;
import org.mybatis.generator.api.dom.xml.XmlElement;
import org.mybatis.generator.codegen.mybatis3.MyBatis3FormattingUtilities;

import com.demo.constans.ApiConstans;

/**
 * @author Jeff Butler
 */
public class UpdateByExampleSelectiveElementGenerator extends AbstractXmlElementGenerator
{
    
    public UpdateByExampleSelectiveElementGenerator()
    {
        super();
    }
    
    @Override
    public void addElements(XmlElement parentElement)
    {
        XmlElement answer = new XmlElement("update"); //$NON-NLS-1$
        
        answer.addAttribute(new Attribute("id", introspectedTable.getUpdateByExampleSelectiveStatementId())); //$NON-NLS-1$
        
        answer.addAttribute(new Attribute("parameterType", "map")); //$NON-NLS-1$ //$NON-NLS-2$
        
        context.getCommentGenerator().addComment(answer);
        
        StringBuilder sb = new StringBuilder();
        sb.append("update "); //$NON-NLS-1$
        sb.append(introspectedTable.getAliasedFullyQualifiedTableNameAtRuntime());
        answer.addElement(new TextElement(sb.toString()));
        
        XmlElement dynamicElement = new XmlElement("set"); //$NON-NLS-1$
        answer.addElement(dynamicElement);
        
        for (IntrospectedColumn introspectedColumn : introspectedTable.getAllColumns()) {
            boolean flag = StringUtils.equalsAnyIgnoreCase(introspectedColumn.getActualColumnName(),
                ApiConstans.COLUMN_MOD_DATETIME);
            if (flag) {
                sb.setLength(0);
                sb.append(MyBatis3FormattingUtilities.getAliasedEscapedColumnName(introspectedColumn));
                sb.append(" = "); //$NON-NLS-1$
                sb.append("sysdate"); //$NON-NLS-1$
                sb.append(',');
                
                dynamicElement.addElement(new TextElement(sb.toString()));
                continue;
            }
            
            XmlElement isNotNullElement = new XmlElement("if"); //$NON-NLS-1$
            sb.setLength(0);
            sb.append(introspectedColumn.getJavaProperty("record.")); //$NON-NLS-1$
            sb.append(" != null"); //$NON-NLS-1$
            isNotNullElement.addAttribute(new Attribute("test", sb.toString())); //$NON-NLS-1$
            dynamicElement.addElement(isNotNullElement);
            
            sb.setLength(0);
            sb.append(MyBatis3FormattingUtilities.getAliasedEscapedColumnName(introspectedColumn));
            sb.append(" = "); //$NON-NLS-1$
            sb.append(MyBatis3FormattingUtilities.getParameterClause(introspectedColumn, "record.")); //$NON-NLS-1$
            sb.append(',');
            
            isNotNullElement.addElement(new TextElement(sb.toString()));
        }
        
        answer.addElement(getUpdateByExampleIncludeElement());
        
        if (context.getPlugins().sqlMapUpdateByExampleSelectiveElementGenerated(answer, introspectedTable)) {
            parentElement.addElement(answer);
        }
    }
}
